Revert of fix quick unlock config in options (patchset #8 id:140001 of https://codereview.chromium.org/2691943005/ )

Reason for revert:
This caused the following test to fail on ChromiumOS
debug bots. I've confirmed reverting this patch would
fix the errors on my local environment.

PolicyPrefIndicatorTestInstance/PolicyPrefIndicatorTest.CheckPolicyIndicators/26

https://build.chromium.org/p/chromium.chromiumos/builders/Linux%20ChromiumOS%20Tests%20%28dbg%29%281%29

Original issue's description:
> This CL is trying to fix 2 issues:
> 1. Quick unlock configuration in options are importing polymer elements(lock_screen.html) created in settings, that includes importing all the elements that lock_screen.html depends on. So if there's new polymer elements imported in lock_screen.html, options wouldn't know where to find them, thus not able to load the lock_screen element. This CL makes options page know these newly added elements.
>
> 2. Trying to pre-load polymer elements in options page for better user experience.
>
> BUG=679795
> CQ_INCLUDE_TRYBOTS=master.tryserver.chromium.linux:closure_compilation
>
> Review-Url: https://codereview.chromium.org/2691943005
> Cr-Commit-Position: refs/heads/master@{#453733}
> Committed: https://chromium.googlesource.com/chromium/src/+/a7b35b6e3091d62218d6093633589997036e3b98

TBR=sammiequon@chromium.org,jdufault@chromium.org,dbeam@chromium.org,xiaoyinh@chromium.org
# Skipping CQ checks because original CL landed less than 1 days ago.
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=679795

Review-Url: https://codereview.chromium.org/2728563003
Cr-Commit-Position: refs/heads/master@{#453891}
7 files changed